Connect the wire marked common to the black or dark colored screw. Leave 810 inches 203254 cm of wire inside each of the boxes before cutting the cable to facilitate easy splicing and connection to the switch and fixture.
3 Way Switch Wiring Diagram House Electrical Wiring Diagram
How to wire a three way switch with two lights. Option 2 is for power into the first switch. White black and red plus a bare ground wire. White or neutral wire taped with black electricians tape is used as black power wire to make connections throughout. At the beginning of the circuit the hot source is connected to the common terminal on sw1. And make sure all of your ground connections are completed and securely fastened. If your 3 way light switch 2 is connected between the power supply and the light fixture as is most common.
The neutral is spliced to the white cable wire running to the lights and then spliced with a pigtail to the neutral terminal at l1. It is true that there are several wiring configurations for wiring 3 way light switches and all of the wiring configurations will depend on where the incoming circuit power is located and once that is identified the rest of the three way wiring connections are straight forward. The existing 2 wire black and white romex can still be used to connect a 3 way switch 2 and the light fixture. Option 1 is for power into the first switch wire to the lights and lastly wire from the light to the other switch. Install a 3 wire cable from the first switch box to the light fixtures box. This diagram sh ows connections when the power comes into the first switch on to the second switch and then on to two or more lights switched by the 3 way circuit.
The 14 3 cable has three insulated conductors. Power through the lights to three way switches has two wire cable and ground between the light boxes and three wire cable and ground at the switches. The neutral is spliced to the white wire feeding the first fixture via cable c1where it is spliced to the neutral of both lights. Feed a length of 14 3 type nm cable or 12 3 if youre connecting to 12 gauge wire between the two boxes. Connect the wires to the new 3 way switches with ground screws using one of the two wiring diagrams fig. 3 way switch diagrams for multiple light fixtures.
Two 2 wire cables c3 and c4 run between the fixtures and a 3 wire cable c2 runs from the second fixture f2 to the second 3 way switch sw2. This option actually requires you to run two romex lines between the lights. When wiring a 3 way switch first screw the terminal screws of the new switch until they are difficult to turn. Connect the two remaining traveler wires to the two brass or light colored screws. Connect the ground wire to the green screw. Finish your work and test.
The hot source is connected to the common terminal of sw1. Note that this configuration is easiest to do when utilizing the first method of 3 way circuits discussed previously in our wiring a basic 3 way switch article or diagram. Two 2 wire cables run between each light fixture after that and 3 wire cable runs from the last light to sw2.
Gallery of How To Wire A Three Way Switch With Two Lights
